Controlling the optical and morphological stability of 4-mercaptobenzoic acid-modified triangular silver nanoplates in saline environments

Sorina Suarasan,Alexandru-Milentie Hada, Mara Muntean,Adriana Vulpoi,Monica Potara,Simion Astilean

Applied Surface Science（2023）

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摘要

•Citrate-coated silver nanoplates (AgNTs) modified with 4-mercaptobenzoic acid (MBA).•AgNTs-MBA exhibit tunable morphological stability in saline environments.•The amount of MBA attached on nanoparticle surface controls AgNTs’ etching degree.•AgNTs-MBA exhibit intrinsic photoluminescence emission and SERS fingerprint signal.•AgNTs’ stability is critical in controlling their photoluminescence/SERS signal.

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关键词

Triangular silver nanoplates, Etching effect, Chloride ions, Light-to-heat conversion, Near-infrared laser excitation, Surface-enhanced Raman scattering

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